/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 98152
 * Date: 2025-03-25
 * Time: 10:39
 */
public class Test {
    public static void main(String[] args) {
        String str = "abc123";
        char ch = str.charAt(0);
        Character.isDigit(ch);
    }
}
